From the Introduction: Inquisition: Purge the Unclean is a solitaire game, taking place in the Warhammer 40,000 universe. In this game, you'll be taking on the role of an Inquisitor; your mission is to eliminate all threats that occupy an underground base in Hive World Golgotha XVII. In order to play Inquisition: Purge the Unclean you'll need a few six-sided dice, these rules and some scratch paper to track the Inquisitor's attributes and any other information.